Alexander, do you know how to use
PNGOUT? It decreases the size of .png files losslessly so that it does not take as long to upload\download. I recommend this command line parameter:
Code:
PNGOUT.exe <filename> /f5 /v /y
You can also use
IrfanView because it has a version of PNGOUT built in. It is a bit faster than the DOS version.